From 0cb05c19529a110c996387bae8ba2047c3232851 Mon Sep 17 00:00:00 2001
From: Teravus Ovares
Date: Fri, 21 Mar 2008 05:54:56 +0000
Subject: * Updated ray tracing code.   It's now good enough to use when the
 XYZ vector components of the scale have a difference of less then 4.5 meters.
 * When a new prim is created and raytracing is called for, raytrace from the
 camera position to the ground in the direction of the Norm(RayEnd -
 RayStart). * If we got a hit based on our camera, create the new prim at the
 edge of the prim we hit. * Don't raytrace if the difference between any
 component of the vector exceeds 4.5meters.

---
 .../Region/Environment/Scenes/Scene.Inventory.cs   |  1 +
 OpenSim/Region/Environment/Scenes/Scene.cs         | 33 +++++++++++++++++++++-
 .../Region/Environment/Scenes/SceneObjectPart.cs   |  7 +++++
 3 files changed, 40 insertions(+), 1 deletion(-)

(limited to 'OpenSim/Region/Environment')

diff --git a/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs b/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
index 046332b..3ce7955 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
@@ -27,6 +27,7 @@
 
 using System;
 using System.Collections.Generic;
+using Axiom.Math;
 using libsecondlife;
 using libsecondlife.Packets;
 using OpenSim.Framework;
diff --git a/OpenSim/Region/Environment/Scenes/Scene.cs b/OpenSim/Region/Environment/Scenes/Scene.cs
index 7948a6f..94a4e31 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.cs
@@ -31,6 +31,7 @@ using System.Drawing;
 using System.Drawing.Imaging;
 using System.Threading;
 using System.Timers;
+using Axiom.Math;
 using libsecondlife;
 using libsecondlife.Packets;
 using OpenJPEGNet;
@@ -1079,7 +1080,37 @@ namespace OpenSim.Region.Environment.Scenes
                 if (target != null)
                 {
                     pos = target.AbsolutePosition;
-                    // TODO: Raytrace here
+                    //m_log.Info("[OBJECT_REZ]: TargetPos: " + pos.ToString() + ", RayStart: " + RayStart.ToString() + ", RayEnd: " + RayEnd.ToString() + ", Volume: " + Util.GetDistanceTo(RayStart,RayEnd).ToString() + ", mag1: " + Util.GetMagnitude(RayStart).ToString() + ", mag2: " + Util.GetMagnitude(RayEnd).ToString());
+                    //target.Scale.X
+                    if (Math.Abs(target.Scale.X - target.Scale.Y) > 4.5f 
+                        || Math.Abs(target.Scale.Y - target.Scale.Z) > 4.5f 
+                        || Math.Abs(target.Scale.Z - target.Scale.X) > 4.5f)
+                    {
+                        
+                        // for now lets use the old method here as the new method works by using the largest scale vector 
+                        // component as the radius of a sphere and produces wide results if there's a huge difference 
+                        // between the x/y/z vector components
+
+                        // If one scale component is less then .21m, it's likely being used as a thin block and therefore 
+                        // the raytracing would produce a wide result.
+                       
+                      
+                    }
+                    else
+                    {
+                        // TODO: Raytrace better here
+                        LLVector3 direction = LLVector3.Norm(RayEnd - RayStart);
+                        Vector3 AXOrigin = new Vector3(RayStart.X, RayStart.Y, RayStart.Z);
+                        Vector3 AXdirection = new Vector3(direction.X, direction.Y, direction.Z);
+                        EntityIntersection ei = m_innerScene.GetClosestIntersectingPrim(new Ray(AXOrigin, AXdirection));
+                        //m_log.Info("[RAYTRACERESULTS]: Hit:" + ei.HitTF.ToString() + " Point: " + ei.ipoint.ToString() + " Normal: " + ei.normal.ToString());
+                        
+                        if (ei.HitTF)
+                        {
+                            pos = new LLVector3(ei.ipoint.x, ei.ipoint.y, ei.ipoint.z);
+                        } 
+                        
+                    }
                     return pos;
                 }
                 else
diff --git a/OpenSim/Region/Environment/Scenes/SceneObjectPart.cs b/OpenSim/Region/Environment/Scenes/SceneObjectPart.cs
index 67048bf..7fd1963 100644
--- a/OpenSim/Region/Environment/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Environment/Scenes/SceneObjectPart.cs
@@ -875,6 +875,13 @@ namespace OpenSim.Region.Environment.Scenes
             if (vScale.z > radius)
                 radius = vScale.z;
 
+            // the second part of this is the default prim size
+            // once we factor in the aabb of the prim we're adding we can 
+            // change this to;
+            // radius = (radius / 2) - 0.01f;
+            //
+            radius = (radius / 2) + (0.5f / 2) - 0.1f;
+
             //radius = radius;
 
             float itestPart3 = tmVal4.x + tmVal4.y + tmVal4.z + tmVal5.x + tmVal5.y + tmVal5.z -
-- 
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